Demarcus Van Dyke's stock is up but you won't get the return on his stock for a while. He has been getting picked on this preseason but he's proven that he can keep up with any receiver in the league.
The problem with Van Dyke is that they catch the ball anyway.
When Van Dyke learns how to play the ball, he is going to be a top cover corner in the NFL. People are down on him but he's a third round pick that really didn't play that much when he was at the University of Miami.
Look at who he's been facing.
Devery Henderson usually beats people by two steps and Van Dyke with him stride for stride. Everyone knows the greatness off Marcus Colston and they have Drew Brees of all quarterbacks throwing them the ball.
Then you have Larry "The Great One" Fitzgerald.
That was only his first game as a pro and he actually had him covered when Fitzgerald made the one-handed grab. If you hadn't noticed, Fitzgerald went 80 yards on Antoine Cason and he's regarded as a solid corner.
Fitzgerald is going to cook everyone with Kevin Kolb as his quarterback.
Over time Van Dyke is going to be great.